Glaciers Hydrology Daren Blanck, MS. Glacier: a Flowing Stream of Ice Mountain Continental (Ice Sheets)

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  • GlaciersHydrologyDaren Blanck, MS

  • Glacier: a Flowing Stream of IceMountain Continental (Ice Sheets)

  • Snowfall vs MeltingZone of AccumulationSnowfall Exceeds Melting & Sublimation (Ablation) Excess Snow Turns to Ice & Flows Out Zone of Melting (Ablation)Ablation Exceeds Snowfall Melting Excess Made up by Ice Flowing in Terminus of GlacierSnowfall & Inflow = Ablation

  • Anatomy of a Glacier

  • FlowGlaciers flow due to Gravity and Internal deformation

  • Crevasse Diagrams

  • A Typical Glacial Advance and Retreat

  • As long as Accumulation = Ablation, the Glacier Front Remains Fixed

  • If Accumulation Exceeds Ablation, the Glacier Advances

  • If Ablation Exceeds Accumulation, the Glacier Retreats

  • Eventually, Material Trapped in the Ice Reaches the Terminus

  • A Typical Glacial Advance and Retreat

  • Results of GlaciationAbrasionPolish Striations Chatter Marks Crescentic GougesBedrock Scour

  • Results of GlaciationDepositionTill/Morraine ErraticsOutwash

  • Animations< Glacial Ice FormationGlacial Erosion >

  • Mountain Glacier Landforms

  • Continental Glacier Landforms

  • 1) Nebraskan 2) Kansan 3) Illinoisian 4) WisconsinNorth American Glaciation

  • Glacial MeltCascade Glacier - Alaska

  • Glacial MeltBolivia

  • Kilimanjaro 1985-2002

  • Greenland Ice Cap

  • Antarctic Ice Cap

  • Antarctic Subglacial Lakes

  • Lake Vostok